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Chapter 17: Problem 6

Discuss the preparation and properties of xenates and perxenates.

Short Answer

Expert verified
Xenates and Perxenates can be prepared by dissolving xenon trioxide (XeO3) and xenon hexafluoride (XeF6) respectively in a base and following hydrolysis. Xenates are potent oxidizing agents, soluble in water and show ambidentate nature. Perxenates are strong oxidizing agents and dehydration of these salts leads to the liberation of xenon gas.

Step by step solution

01

Preparation of Xenates

Xenates (XeO4^-2) can be prepared by dissolving xenon trioxide (XeO3) in a base. This results in the formation of xenates. The reaction is as follows: \[ XeO3 + 2OH- → XeO4^-2 + H2O \]
02

Properties of Xenates

Xenates are potent oxidizing agents and they are soluble in water. They show ambidentate nature, which means they can link to another atom by two different atoms present in it.
03

Preparation of Perxenates

Perxenates (XeO6^-4) can be prepared by dissolving xenon hexafluoride (XeF6) in a strong base and subsequent hydrolysis. The reaction can be represented as follows: \[ XeF6 + 4OH- → XeO6^-4 + 6F- + 2H2O \]
04

Properties of Perxenates

Perxenates are strong oxidizing agents. Any attempt to dehydrate these salts leads to the liberation of xenon gas.

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Most popular questions from this chapter

Explain why the noble-gas compounds of Xe, \(\mathrm{Kr}\) and Rn exist as fluorides and oxides.

Discuss the hybridisation and sructure of (a) \(\mathrm{XeF}_{4}\) (b) \(\mathrm{XeO}_{2} \mathrm{~F}_{2}\) (c) \(\mathrm{XeO}_{3}\) (d) \(\mathrm{XeO}_{3} \mathrm{~F}_{2}\)

Give reasons for the following: (a) Noble gases have very high ionisation energies and almost zero electron affinities. (b) He does not form clathrates. (c) Noble gases are monoatomic. (d) Clathrates are not true chemical compounds.

Describe the isolation process of noble gases.

Describe the discovery of the first true noble-gas compound.
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